Battery pack and electric vehicle

Abstract

Provided are a battery pack and an electric vehicle. The battery pack includes a case, a cooling plate assembly and an energy storage unit. The cooling plate assembly and the energy storage unit are arranged inside the case, and the cooling plate assembly at least includes a first cooling plate. The first cooling plate is fixed on the case, and the first cooling plate divides the case, in a Z-direction, into a first accommodating space which is located above the first cooling plate, and a second accommodating space which is located below the first cooling plate. The energy storage unit at least includes a first energy storage unit which is arranged inside the first accommodating space and fixed on the first cooling plate, and a second energy storage unit which is arranged inside the second accommodating space.

What is claimed is: 
     
         1 . A battery pack comprising;
 a case;   a cooling plate assembly; and   an energy storage unit;   wherein the cooling plate assembly and the energy storage unit are arranged inside the case, the cooling plate assembly at least comprises a first cooling plate securely disposed within the case dividing the case along a Z-direction into a first accommodation space located above the first cooling plate and a second accommodation space located below the first cooling plate;   wherein the energy storage unit at least comprises a first energy storage unit disposed in the first accommodation space and securely attached to the first cooling plate, and a second energy storage unit disposed in the second accommodation space; and   wherein at least one second supporting member is provided on an upper surface of the second energy storage unit, and is directly attached to the first cooling plate.   
     
     
         2 . The battery pack according to  claim 1 , wherein the first energy storage unit is in thermal contact with the first cooling plate. 
     
     
         3 . The battery pack according to  claim 1 , wherein the cooling plate assembly further comprises a second cooling plate, the second cooling plate is arranged between a bottom surface of the case and the second energy storage unit, and the second cooling plate is in thermal contact with the second energy storage unit. 
     
     
         4 . The battery pack according to  claim 1 , wherein the first energy storage unit comprises at least two first battery groups arranged parallel to each other, two adjacent first battery groups are connected with each other, and the at least one second supporting member is arranged corresponding to a junction of the two adjacent first battery groups in the Z-direction. 
     
     
         5 . The battery pack according to  claim 4 , wherein each of the at least two first battery groups comprises at least two first battery modules arranged parallel to each other, two adjacent first battery modules are connected with each other, and the at least one second supporting member is arranged corresponding to a junction of the two adjacent first battery modules in the Z-direction. 
     
     
         6 . The battery pack according to  claim 1 , wherein the first energy storage unit comprises at least two first battery groups arranged parallel to each other, each of the at least two first battery groups comprises at least two first battery modules arranged parallel to each other, two adjacent first battery modules are connected with each other, and the at least one second supporting member is arranged corresponding to a junction of the two adjacent first battery modules in the Z-direction. 
     
     
         7 . The battery pack according to  claim 1 , further comprising a battery management system mounting plate arranged inside the case, and the battery management system mounting plate being arranged above the first energy storage unit. 
     
     
         8 . The battery pack according to  claim 7 , wherein a first supporting member is provided on the first energy storage unit, and the battery management system mounting plate is fixedly connected with the first supporting member. 
     
     
         9 . The battery pack according to  claim 8 , wherein the first supporting member protrudes above an upper surface of the first energy storage unit. 
     
     
         10 . An electric vehicle comprising the battery pack according to  claim 1 . 
     
     
         11 . An electric vehicle comprising the battery pack according to  claim 5 . 
     
     
         12 . The battery pack according to  claim 1 , wherein the first energy storage unit comprises a plurality of first connecting members and at least two first battery groups arranged parallel to each other and connected to each other through the plurality of first connecting members. 
     
     
         13 . The battery pack according to  claim 12 , wherein a junction of the at least two first battery groups and two ends of the first energy storage unit are provided with first supporting members, and the first supporting members at the junction of the at least two first battery groups are integrally formed with the first connecting members provided at the junction of the at least two first battery groups. 
     
     
         14 . The battery pack according to  claim 1 , wherein the second energy storage unit comprises a plurality of second connecting members and at least two second battery groups arranged parallel to each other and connected to each other through the plurality of second connecting members. 
     
     
         15 . The battery pack according to  claim 14 , wherein a plurality of second supporting members are provided on the second energy storage unit, a junction of the at least two second battery groups and two ends of the second energy storage unit are provided with the plurality of second supporting members, and the second supporting members at the junction of the at least two second battery groups are integrally formed with the second connecting members provided at the junction of the at least two second battery groups.